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2020 – today
- 2024
[j26]Raiki Kudo
, Akira Hirose, Ryo Natsuaki:
Removal of Synthetic Aperture Radar Range Ambiguity by Observing Adjacent Regions. IEEE Geosci. Remote. Sens. Lett. 21: 1-5 (2024)- [j25]Ryu Sugimoto, Ryo Natsuaki, Ryosuke Nakamura, Chiaki Tsutsumi, Yoshio Yamaguchi:
Time Series Scattering Power Decomposition Using Ensemble Average in Temporal-Spatial Domains: Application to Forest Disturbance Detection. IEEE Geosci. Remote. Sens. Lett. 21: 1-5 (2024) - [j24]Akira Hirose, Fang Shang, Yuta Otsuka, Ryo Natsuaki, Yuya Matsumoto, Naoto Usami, Yicheng Song, Haotian Chen:
Quaternion Neural Networks: A physics-incorporated intelligence framework [Hypercomplex Signal and Image Processing]. IEEE Signal Process. Mag. 41(3): 88-100 (2024) - [j23]Gunjan Joshi, Celia A. Baumhoer, Andreas J. Dietz, Ryo Natsuaki, Akira Hirose:
Multisensor Glacier Surface Classification Using Confidence-Aware Explainable Inverse-Mapping Neural Network. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 17: 17471-17488 (2024) - [j22]Yuta Otsuka, Ryo Natsuaki, Akira Hirose:
Biquaternion Fourier Domain Filter for InSAR Noise Suppression by Enhancing Polarimetric-Interferometric Fringe Patterns. IEEE Trans. Geosci. Remote. Sens. 62: 1-13 (2024) - [j21]Haotian Chen, Ryo Natsuaki, Akira Hirose:
Robust Symbol Detection Based on Quaternion Neural Networks in Wireless Polarization-Shift-Keying Communications. IEEE Trans. Neural Networks Learn. Syst. 35(11): 16064-16075 (2024) - [c59]Raúl Díez-García, Roger Oliva, Ryo Natsuaki, Priscilla N. Mohammed, Beau Backus, Mingliang Tao, Paolo de Matthaeis:
P4006: An IEEE Standard in Development for RFI Impact Assessment. IGARSS 2024: 265-267 - [c58]Gunjan Joshi, Ryo Natsuaki, Akira Hirose:
Complex-Valued Neural-Network Inverse Mapping for Explainability in PolSAR/InSAR Applications. IGARSS 2024: 2000-2003 - [c57]Yicheng Song, Ryo Natsuaki, Akira Hirose:
Landmine Detection Based on Riemannian Phasor Quaternion Self-Organizing Map. IGARSS 2024: 6492-6465 - [c56]Ryu Sugimoto, Yu Morishita, Masanobu Shimada, Ryo Natsuaki, Chiaki Tsutsumi, Ryosuke Nakamura, Toru Kouyama:
Characterization of Systematic Bias in ALOS-2 Multilooked Interferograms. IGARSS 2024: 10703-10706 - [c55]Yukio Endo, Yu Morishita, Ryu Sugimoto, Ryo Natsuaki, Masanobu Shimada, Chiaki Tsutsumi, Toru Kouyama, Ryosuke Nakamura:
Comparison of Temporal Decorrelation Decay Functions Over Land Cover Types for L- and C-vand SAR. IGARSS 2024: 10719-10722 - [c54]Yuta Otsuka, Ryo Natsuaki, Akira Hirose:
Polarimetric Goldstein Filter for Interferometric Phase Denoising. IGARSS 2024: 10851-10854 - [c53]Raito Suzuki, Akira Hirose, Ryo Natsuaki:
Optimizing PN-Sequences with Genetic Algorithm for SAR Waveform Diversity. IGARSS 2024: 11161-11164 - [c52]Yu Hashimoto, Ryo Natsuaki, Akira Hirose:
RFI Detection Using Degree of Polarization for Polarimetric Synthetic Aperture Radar. IGARSS 2024: 11482-11485 - [c51]Yuto Wakui, Junya Kato, Ryo Natsuaki, Akira Hirose:
Time-series Forecasting Coding: A New Processing Method Developed from Predictive Coding for Recurrent Neural Networks. IJCNN 2024: 1-8 - 2023
- [j20]Gunjan Joshi, Ryo Natsuaki, Akira Hirose:
Neural Network Fusion Processing and Inverse Mapping to Combine Multisensor Satellite Data and Analyze the Prominent Features. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 16: 2819-2840 (2023) - [j19]Gunjan Joshi, Ryo Natsuaki, Akira Hirose:
Application of Inverse Mapping for Automated Determination of Normalized Indices Useful for Land Surface Classification. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 16: 7804-7818 (2023) - [j18]Yicheng Song, Ryo Natsuaki, Akira Hirose:
Riemannian Quaternion Self-Organizing Map to Overcome Degree-of-Polarization Error in Polarimetric Ground-Penetrating Radar. IEEE Trans. Geosci. Remote. Sens. 61: 1-11 (2023) - [c50]Lena Azuma, Ryo Natsuaki, Akira Hirose:
Skin-Penetrating Interfaces for Millimeter-Wave Non-Invasive Glucose Concentration Estimation: Numerical Analysis. EMBC 2023: 1-4 - [c49]Gunjan Joshi, Ryo Natsuaki, Akira Hirose:
Automated Determination of Normalized Indices Useful for Glacier Surface Classification. IGARSS 2023: 215-218 - [c48]Ryo Natsuaki, Roger Oliva, Raúl Díez-García, Mingliang Tao, Paolo de Matthaeis:
Standardizing The Impact Assessment of Radio Frequency Interference (RFI) in Space-Based Remote Sensing: Challenges and Benefits. IGARSS 2023: 1119-1121 - [c47]Yuta Otsuka, Ryo Natsuaki, Akira Hirose:
Proposal of Biquaternion Neural Networks for Coherent Processing of Polarization-and-Phase Information in Polsar and Polinsar. IGARSS 2023: 1914-1917 - [c46]Ryo Natsuaki, Ryu Sugimoto, Masanobu Shimada, Chiaki Tsutsumi, Ryosuke Nakamura:
Urban Damage Detection Using Temporally Stacked Synthetic Aperture Radar Interferometric Coherence. IGARSS 2023: 1991-1993 - [c45]Ryuta Imai, Ryo Natsuaki, Akira Hirose:
Estimation of Dielectric Constant Distribution Utilizing Subsurface Objects Based on Radar Image Focusing. IGARSS 2023: 2544-2547 - [c44]Ryuta Imai, Ryo Natsuaki, Akira Hirose:
Target-Phase-Focused Feature Synthesis and Extraction for Weakly Scattering Objects in Ground Penetrating Radar. IGARSS 2023: 4356-4359 - [c43]Bungo Konishi, Akira Hirose, Ryo Natsuaki:
INSAR Phase Filtering By Attention-Based Reservoir Computing For High Reliability. IGARSS 2023: 5198-5201 - [c42]Raito Suzuki, Ryo Natsuaki, Akira Hirose:
Extending Observation Coverage of SAR by Separating Range Ambiguous Signals Using PN-sequences. IGARSS 2023: 8292-8295 - [c41]Yicheng Song, Ryo Natsuaki, Akira Hirose:
Landmine Detection Based on Generalized Riemannian Quaternion Self-Organizing Map. IGARSS 2023: 8307-8310 - [c40]Haotian Chen, Ryo Natsuaki, Akira Hirose:
Symbol Detection for Polarization Shift Keying Based on Quaternion Neural Networks. IJCNN 2023: 1-8 - [c39]Haotian Chen, Ryo Natsuaki, Akira Hirose:
Reservoir Computing for Symbol Detection of Optical Wireless Scattering Communications. IJCNN 2023: 1-6 - 2022
- [j17]Haotian Chen, Ryo Natsuaki, Akira Hirose:
Polarization-Aware Prediction of Mobile Radio Wave Propagation Based on Complex-Valued and Quaternion Neural Networks. IEEE Access 10: 66589-66600 (2022) - [j16]Yuya Matsumoto, Ryo Natsuaki, Akira Hirose:
Full-Learning Rotational Quaternion Convolutional Neural Networks and Confluence of Differently Represented Data for PolSAR Land Classification. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 15: 2914-2928 (2022) - [j15]Ryuta Imai, Yicheng Song, Ryo Natsuaki, Akira Hirose:
Model-Based Homogeneity to Extend Compressed Sensing for Ground Penetrating Radar. IEEE Trans. Geosci. Remote. Sens. 60: 1-10 (2022) - [c38]Ryuta Imai, Yicheng Song, Ryo Natsuaki, Akira Hirose:
Proposal of Detection of Subsurface Objects with Model-Based Homogeneity to Extend Compressed Sensing. IGARSS 2022: 107-110 - [c37]Yuya Matsumoto, Ryo Natsuaki, Akira Hirose:
Proposal of PolSAR Land Classification Using Full-Learning Quaternion Convolutional Neural Networks. IGARSS 2022: 235-238 - [c36]Gunjan Joshi, Ryo Natsuaki, Akira Hirose:
Neural Network Model for Multi-Sensor Fusion and Inverse Mapping Dynamics for the Analysis of Significant Factors. IGARSS 2022: 473-476 - [c35]Ryo Natsuaki, Akira Hirose:
Polarimetric Analysis of RFI in L-Band SAR System. IGARSS 2022: 5145-5148 - [c34]Masato Ohki, Ryo Natsuaki, Sadayoshi Aoyama, Takeo Tadono:
An experiment of flooded building detection using ALOS-2 and a flood experiment field. IGARSS 2022: 5220-5221 - [c33]Bungo Konishi, Akira Hirose, Ryo Natsuaki:
InSAR Phase Unwrapping Using Dynamics of Coupled Phase Oscillators of the Kuramoto Model. IGARSS 2022: 7992-7995 - [c32]Haotian Chen, Ryo Natsuaki, Akira Hirose:
Predicting polarization state based on quaternion neural networks to facilitate channel prediction. IJCNN 2022: 1-6 - 2021
- [j14]Bungo Konishi, Akira Hirose, Ryo Natsuaki:
Complex-Valued Reservoir Computing for Interferometric SAR Applications With Low Computational Cost and High Resolution. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 14: 7981-7993 (2021) - [c31]Bungo Konishi, Akira Hirose, Ryo Natsuaki:
Generalization characteristics of complex-valued reservoir computing for interferometric synthetic aperture radar applications. APSIPA ASC 2021: 174-178 - [c30]Seishiro Goto, Ryo Natsuaki, Akira Hirose:
Proposal of higher-order tensor independent component analysis for signal separation in multiple-input multiple-output respiration/heartbeat remote sensing*. EMBC 2021: 325-328 - [c29]Yuya Matsumoto, Ryo Natsuaki, Akira Hirose:
Proposal of PolSAR Land Classification Using Quaternion Convolutional Neural Networks. IGARSS 2021: 403-406 - [c28]Bungo Konishi, Akira Hirose, Ryo Natsuaki:
Proposal of Complex-Valued Reservoir Computing for Topographic Aspect Classification. IGARSS 2021: 1268-1271 - [c27]Ryo Natsuaki, Ryu Sugimoto, Chiaki Tsutsumi, Ryosuke Nakamura:
Emulation of a Sar Interferogram from the Past Satellites for the Present Events. IGARSS 2021: 3987-3990 - 2020
- [j13]Ryo Natsuaki, Hiroto Nagai:
Synthetic Aperture Radar Flood Detection under Multiple Modes and Multiple Orbit Conditions: A Case Study in Japan on Typhoon Hagibis, 2019. Remote. Sens. 12(6): 903 (2020) - [j12]Yuta Otsuka, Tomoharu Shimada, Ryo Natsuaki, Akira Hirose:
Consideration on Singular-Point Generating Mechanisms by Analyzing the Effect of Phase-and-Polarization Optimization in PolInSAR. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 13: 1625-1638 (2020) - [c26]Yuki Sunaga, Ryo Natsuaki, Akira Hirose:
Complex-Valued Convolutional Neural Networks in Interferometric Synthetic Aperture Radar and Their Teacher-Image Pollution Influence on the Performance. IGARSS 2020: 425-428 - [c25]Ryo Natsuaki, Pau Prats-Iraola:
Suppression of Additional Azimuth Ambiguities Under Multi-Channel and Multi-Waveform SAR. IGARSS 2020: 1157-1160 - [c24]Ryo Natsuaki, Marc Jäger, Pau Prats-Iraola:
Similarity Approach for Radio Frequency Interference Detection and Correction in Multi-Receiver SAR. IGARSS 2020: 3770-3773 - [c23]Yuki Sunaga, Ryo Natsuaki, Akira Hirose:
Similar land-form discovery: Complex absolute-value max pooling in complex-valued convolutional neural networks in interferometric synthetic aperture radar. IJCNN 2020: 1-7
2010 – 2019
- 2019
- [j11]Yu Li, Sandro Martinis, Marc Wieland, Stefan Schlaffer, Ryo Natsuaki:
Urban Flood Mapping Using SAR Intensity and Interferometric Coherence via Bayesian Network Fusion. Remote. Sens. 11(19): 2231 (2019) - [j10]Yuki Sunaga, Ryo Natsuaki, Akira Hirose:
Land Form Classification and Similar Land-Shape Discovery by Using Complex-Valued Convolutional Neural Networks. IEEE Trans. Geosci. Remote. Sens. 57(10): 7907-7917 (2019) - [c22]Ryo Natsuaki, Nida Sakar, Nestor Yague-Martinez, Muriel Pinheiro, Pau Prats-Iraola:
Investigations on the Optimum Combination of Azimuth Phase Coding and Up- and Down-Chirp Modulation for Range Ambiguity Suppression. IGARSS 2019: 2288-2291 - [c21]Hyunsoo Kim, Jungmin Song, Ryo Natsuaki, Akira Hirose:
Dependence of Polarimetric Characteristics on Sar Resolutions: Experimental Analysis. IGARSS 2019: 3289 - [c20]Ryo Natsuaki, Akiko Noda:
Demonstration of InSAR-Based Three Dimensional Continuous Deformation Monitoring. IGARSS 2019: 4723-4726 - [c19]Yuta Otsuka, Ryo Natsuaki, Akira Hirose:
Enhancement of Polarization Mechanism in Pixel-By-Pixel Phase Optimization in Polinsar. IGARSS 2019: 5706-5709 - 2018
- [j9]Ryo Natsuaki, Hiroto Nagai, Naoya Tomii, Takeo Tadono:
Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence - A Case Study in 2016 Kumamoto Earthquakes. Remote. Sens. 10(2): 245 (2018) - [j8]Tomoharu Shimada, Ryo Natsuaki, Akira Hirose:
Pixel-by-Pixel Scattering Mechanism Vector Optimization in High-Resolution PolInSAR. IEEE Trans. Geosci. Remote. Sens. 56(5): 2587-2596 (2018) - [j7]Shunichiro Fujinami, Ryo Natsuaki, Kazuhide Ichikawa, Akira Hirose:
Experimental Analysis on the Mechanisms of Singular Point Generation in InSAR by Employing Scaled Optical Interferometry. IEEE Trans. Geosci. Remote. Sens. 56(7): 3830-3837 (2018) - [c18]Yuki Sunaga, Ryo Natsuaki, Akira Hirose:
Proposal of Complex-Valued Convolutional Neural Networks for Similar Land-Shape Discovery in Interferometric Synthetic Aperture Radar. ICONIP (1) 2018: 340-349 - [c17]Ryo Natsuaki, Akira Hirose:
Profiles of RFI in Alos-2 Images - A Case Study in Tokyo Bay, Japan. IGARSS 2018: 319-322 - [c16]Youngjoo Kwak, Ryo Natsuaki, Sang-Ho Yun:
Effect of Building Orientation on Urban Flood Mapping Using Alos-2 Ampilitude Images. IGARSS 2018: 2350-2353 - [c15]Ryo Natsuaki, Akira Hirose:
L-Band SAR Interferometric Analysis for Flood Detection in Urban Area - a Case Study in 2015 Joso Flood, Japan. IGARSS 2018: 6592-6595 - 2017
- [j6]Ryo Natsuaki, Takeshi Motohka, Masanobu Shimada, Shinichi Suzuki:
Burst Misalignment Evaluation for ALOS-2 PALSAR-2 ScanSAR-ScanSAR Interferometry. Remote. Sens. 9(3): 216 (2017) - [j5]Ryo Natsuaki, Takeshi Motohka, Manabu Watanabe, Masanobu Shimada, Shinichi Suzuki:
An Autocorrelation-Based Radio Frequency Interference Detection and Removal Method in Azimuth-Frequency Domain for SAR Image. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 10(12): 5736-5751 (2017) - [c14]Ryo Natsuaki, Masato Ohki, Hiroto Nagai, Takeshi Motohka, Takeo Tadono, Masanobu Shimada, Shinichi Suzuki:
Performance of ALOS-2 PALSAR-2 for disaster response. IGARSS 2017: 2434-2437 - [c13]Ryo Natsuaki, Takeshi Motohka, Takeo Tadono, Shinichi Suzuki:
Polarimetric characteristics of temporarily coherent RFI in alos-2 palsar-2. IGARSS 2017: 3155-3158 - 2016
- [c12]Ryo Natsuaki, Manabu Watanabe, Takeshi Motohka, Shinichi Suzuki:
RFI detection and removal in Range-time Azimuth-frequency domain. IGARSS 2016: 313-316 - [c11]Yukihiro Kankaku, Shinichi Suzuki, Takeshi Motohka, Masato Ohki, Ryo Natsuaki, Masanobu Shimada:
ALOS-2 operation status. IGARSS 2016: 3846-3848 - [c10]Ryo Natsuaki, Takeshi Motohka, Manabu Watanabe, Masato Ohki, Rajesh Bahadur Thapa, Hiroto Nagai, Takeo Tadono, Masanobu Shimada, Shinichi Suzuki:
Emergency observation and disaster monitoring performed by ALOS-2 PALSAR-2. IGARSS 2016: 3849-3852 - [c9]Manabu Watanabe, Masashi Sonobe, Ryo Natsuaki, Shinichi Suzuki:
Trial of volcanic ash detection using L-band synthetic aperture radar (SAR). IGARSS 2016: 7701-7704 - 2015
- [c8]Ryo Natsuaki, Manabu Watanabe, Takeshi Motooka, Masato Ohki, Masanobu Shimada:
Accuracy improvement by residue and amplitude based local co-registration method for ALOS-2/PALSAR-2 DInSAR. IGARSS 2015: 302-305 - [c7]Shunichiro Fujinami, Ryo Natsuaki, Akira Hirose:
Experimental analysis of singular point generation mechanisms in interferometric SAR using optics: The possibility of singular point generation by interference in a single pixel. IGARSS 2015: 4256-4259 - 2014
- [j4]Ryo Natsuaki, Akira Hirose:
Circular property of complex-valued correlation learning in CMRF-based filtering for synthetic aperture radar interferometry. Neurocomputing 134: 165-172 (2014) - [j3]Kotaro Terabayashi, Ryo Natsuaki, Akira Hirose:
Ultrawideband Direction-of-Arrival Estimation Using Complex-Valued Spatiotemporal Neural Networks. IEEE Trans. Neural Networks Learn. Syst. 25(9): 1727-1732 (2014) - [c6]Ryo Natsuaki, Akira Hirose:
Changes of dominant scatterers and propagation paths as a possible origin of singular points in radar interferometry: Experimental analysis. IGARSS 2014: 290-293 - 2013
- [j2]Ryo Natsuaki, Akira Hirose:
InSAR Local Co-Registration Method Assisted by Shape-From-Shading. IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens. 6(2-3): 953-959 (2013) - [c5]Ryo Natsuaki, Akira Hirose:
PHase property in complex-correlation and real-imaginary-correlation filtered SAR interferograms and its influence on DEM quality. IGARSS 2013: 2067-2070 - 2012
- [c4]Ryo Natsuaki, Akira Hirose:
Improvement of ALOS interferogram quality by use of the local co-registration method using singular-point and amplitude information. IGARSS 2012: 5602-5605 - 2011
- [j1]Ryo Natsuaki, Akira Hirose:
SPEC Method - A Fine Coregistration Method for SAR Interferometry. IEEE Trans. Geosci. Remote. Sens. 49(1-1): 28-37 (2011) - [c3]Ryo Natsuaki, Akira Hirose:
Local co-registration for distortion reduction in SAR interferogram using amplitude information - combination of SPEC method and shape-from-shading -. IGARSS 2011: 1642-1645 - [c2]Akira Hirose, Ryo Natsuaki:
Circular Property in Complex-Valued Correlation Learning Observed in CMRF-Based Singular Unit Restoration for Phase Unwrapping. IScIDE 2011: 530-537
2000 – 2009
- 2009
- [c1]Ryo Natsuaki, Akira Hirose:
Local, Nonlinear Adaptive Co-registration of Master and Slave Interferometric SAR Complex Image Data for High Quality Digital Elevation Map Generation. IGARSS (5) 2009: 166-167
Coauthor Index
[j26] [j24] [j23] [j22] [j21] [c58] [c57] [c54] [c53] [c52] [c51] [j20] [j19] [j18] [c50] [c49] [c47] [c45] [c44] [c43] [c42] [c41] [c40] [c39] [j17] [j16] [j15] [c38] [c37] [c36] [c35] [c33] [c32] [j14] [c31] [c30] [c29] [c28] [j12] [c26] [c23] [j10] [c21] [c19] [j8] [j7] [c18] [c17] [c15] [c7] [j4] [j3] [c6] [j2] [c5] [c4] [j1] [c3] [c2] [c1]
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